269 ramp, M, a – Metrohm 746 VA Trace Analyzer User Manual
Page 420
5.7.3 Alphabetical instruction list
746 VA Trace Analyzer / 747 VA Stand
5-269
RAMP
Page:
S
Stand:
M, A
Abbreviation:
RAM
Instructions t/s Main parameters Auxiliary parameters
––––––––––––– ––––– ––––––––––––––––––––––––– –––––––––––––––––––––––––
## .. RAMP U.start ........mV U.step ........mV
U.end ........mV t.step ........s
Sweep rate XXXXXXXXmV/s
Function
Voltage ramp for cyclic voltammetry.
Parameter
Range; Default value / Meaning
U.start
-3000...3000 mV; -
Initial voltage
Initial voltage for the voltage ramp.
U.end
-3000...3000 mV; -
Final voltage
Final voltage for the voltage ramp. This voltage is retained after the end
of the sweep until a new voltage is applied or until it is switched off by
ØMEAS
or
END
in the main program on the "OP.SEQUENCE" page.
U.step
1...12 mV; 5 mV
Voltage step
Voltage step for direct current ramp.
The following condition holds for the definition of
U.step
:
U.step
–––––––– < 100 V/s
t.step
t.step
0.1...9.9 ms, 0.01...9.99 s; 1.0 ms
Time interval for voltage step
Time interval after which the voltage in the sweep is increased or
decreased by the amount
U.step
.
The following condition applies to the definition of
t.step
:
U.step
–––––––– < 100 V/s
t.step
Sweep rate
display only
Ramp slope
Here, the slope of the direct current ramp is displayed in mV/s. It is
calculated as follows:
U.step
Sweep rate = ––––––––
t.step